Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Net Income (Loss) Per Share

For purposes of this calculation, common stock subject to repurchase by the Company and options are considered to be common stock equivalents and are only included in the calculation of diluted earnings per share when their effect is dilutive.

	Year Ended December 31,
	2015			2014			2013
	(in thousands, except per share amounts)
Numerator:
Net loss available to common stockholders	($	2,602	)	($	11,799	)	($	27,953	)
Denominator:
Weighted average shares outstanding - basic		45,946			40,649			36,982
Potential common shares - options (treasury stock method)		—			—			—
Weighted average shares outstanding - diluted		45,946			40,649			36,982
Shares excluded (anti-dilutive)		70			150			2
Shares excluded due to an exercise price greater than weighted average stock price for the period		1,132			1,511			2,150
Net loss per common share:
Basic	($	0.06	)	($	0.29	)	($	0.76	)
Diluted	($	0.06	)	($	0.29	)	($	0.76	)